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The 16th Pyramid Game begins, and Ha Rin suggests choosing a classmate who will become a permanent Grade F. Before the voting takes place, Soo Ji tells the class that Ye Lim was attacked and hospitalized. The class decides to vote on whether to stay. playing or not, and the entire process is broadcast live, causing the school to be in an uproar. Meanwhile, Ja Eun tells Soo Ji what she did to Ha Rin when they were little.
Bona
Seong Su-ji
Jang Da-a
Baek Ha-rin
Ryu Da-in
Myung Ja-eun
Kang Na-eon
Im Ye-rim
Jeong Ha-dam
Ko Eun-byeol
Ha Yul-Ri
Bang Woo-yi
Hwang Hyun-jung
Kim Da-yeon
Shin Seul-ki
Seo Do-ah
Lee Ju-yeon
Shim Eun-jeong
Oh Se-eun
Song Jae-hyung
Ahn So-yo
Yoon Na-hee
Son Ji-na
The President
Jeon Sa-ra
Teacher Choi
Seo Kyung-hwa
Kang Seon-hee